what conclusion could be drawn from meselson and stahl dna replication experiment after a single round of dna replication?

The conclusion that could be derived from Meselson and Stahl's DNA replication experiment after a single round of DNA replication is that DNA duplicated semi-conservatively, which means that each strand in a DNA molecule acts as a template for the synthesis of a new, complementary strand.

What exactly is DNA replication?

The process by which the genome's DNA is duplicated in cells is known as DNA replication. Before dividing, a cell must copy (or duplicate) its whole genome so that each ensuing daughter cell has its own full genome.

The three DNA replication models are:

Conservative. Replication creates one helix entirely composed of old DNA and one helix entirely composed of new DNA.
Semi-conservative. Replication generates two helices, each with one old and one new DNA strand.
Dispersive.

Before cells may divide, their DNA must be replicated. This guarantees that each daughter cell receives a copy of the genome, resulting in effective genetic trait inheritance. DNA replication is a necessary activity, and the underlying mechanism is shared by all species.

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